#include<stdio.h>
#include<conio.h>
void main()
{
  int a=2,b=10;
  clrscr();
  printf("123456789\n");//dung de dem do rong ky tu can in ra
  printf("%d\n",a);
  printf("%4d\n",a);
  printf("%-4d\n",a);
  printf("%02d\n",a);
  printf("%05d\n",a);
  printf("%02d\n",b);
  printf("%1d\n",b);
  getch();
}nm

